linux-kernel - Re: [PATCH net-next v2] dt-bindings: net: ath11k: document the inputs of the ath11k on WCN6855

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Message-ID: <CAMRc=Mc2sbTrORZr4K4NgdyofNTipR1-QEqNK9mmNT=sd1myHQ@mail.gmail.com>
Date: Sat, 21 Sep 2024 06:56:05 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Jeff Johnson <quic_jjohnson@...cinc.com>
Cc: Kalle Valo <kvalo@...nel.org>, Krzysztof Kozlowski <krzk@...nel.org>, 
	"David S . Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Jeff Johnson <jjohnson@...nel.org>, linux-wireless@...r.kernel.org, 
	netdev@...r.kernel.org, devicetree@...r.kernel.org, 
	ath11k@...ts.infradead.org, linux-kernel@...r.kernel.org, 
	Bartosz Golaszewski <bartosz.golaszewski@...aro.org>, Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH net-next v2] dt-bindings: net: ath11k: document the inputs
 of the ath11k on WCN6855

On Fri, Sep 20, 2024 at 11:02 PM Jeff Johnson <quic_jjohnson@...cinc.com> wrote:
>
> >
> > Let me give you an analogy: we don't really need to have always-on, fixed
> > regulators in DTS. The drivers don't really need them. We do it for
> > completeness of the HW description.
>
> Again, since I'm a DT n00b:
> Just to make sure I understand, you are saying that with this change any
> existing .dts/.dtb files will still work with an updated driver, so the new
> properties are not required to be populated on existing devices.
>

There are no driver updates. No functional change.

> However a new driver with support for these properties will utilize them when
> they are present, and the current ath11k .dts files will need to be updated to
> include these properties for pci17cb,1103, i.e. the following needs updating:
> arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts

What new driver? The dts is being updated in a separate series[1]. It
makes this platform use the new power sequencing subsystem for
wcn6855. All other changes required to make it work are already
upstream. There's no change to ath11k.

Bart

[1] https://lore.kernel.org/all/20240905122023.47251-1-brgl@bgdev.pl/